Power Supply Specifications; Fig. 2 Three-Phase Star (Wye System); 4 Wire; Center Point Solidly Grounded; Fig. 3 Three-Phase Star (Wye System); 3 Wire; Grounded Center Point Solidly Grounded; Tab. 16 Supply Details 208V / 3Ph / 60Hz - KAESER SM 7.5 Operator's Manual

Fig. 2
Fig. 3
Further information
2.14
Tab. 16
Tab. 17
10
2 Technical Data
2.14

Power supply specifications

Other power supplies are not suitable.
Three-phase star (wye system); 4 wire; center point solidly grounded
Three-phase star (wye system); 3 wire; grounded center point solidly grounded
Please contact an authorized KAESER service representative for options.
The electrical diagram 13.4 contains further specifications for electrical connection.
Power supply specifications
The following multi-strand copper core wires are given according to 2014 NEC 310.15, Ta‐
ble 310.16 for 104°F ambient temperature.
If other local conditions prevail, like for example high temperature, the cross section should be
checked and adjusted according to 2014 NEC 110.14©, 220.3, 310.15, Table 310.16, 430.6,
430.22, 430.24 and other local codes.
Dual element time delay fuses are selected according to 2014 NEC 240.6, 430.52 and ta‐
bles 430.52, 430.248 and 430.250.
We strongly suggest using a separate copper conductor for the equipment GROUNDING. NEC
Table 250.122 will point out the "minimum size", however, we recommend a ground conductor the
same size as the power leads, if local codes allow.
Rated power supply 208V / 3-ph / 60Hz
Pre-fuse [A]
Supply
Consumption [A]
Supply details 208V / 3ph / 60Hz
Rated power supply 230V / 3-ph / 60Hz
Pre-fuse [A]
Supply
Consumption [A]
Supply details 230V / 3ph / 60Hz
Operator Manual Screw Compressor
SM Tri-Voltage, SIGMA CONTROL 2
SM 7.5
30
4xAWG8 4xAWG6
23
SM 7.5
30
4xAWG8 4xAWG6
22
SM 10 SM 15
45
4xAWG4
32
SM 10 SM 15
45
4xAWG4
30
60
40
50
38
9_5875 33 USE